[Solved] requestItems not calling WebService

[Paweł Aszklar]

Hi,

I have encountered an issue after downloading internal build of ASP.NET AJAX UI Controls version 2009.2.824, and it still exists in release version 2009.2.826.35. I have a control with two related comboBoxes both of which use webservices to get items. When the page is loaded both comboBoxes get populated as expected, but when I change selected item in the first one OnClientSelectedIndexChange gets called where I call requestItems on the other comboBox, but WebService method does not execute.

here is my markup:

<div class="border"></div>

<div style="clear:both; overflow:hidden; margin:2px">

<div style="float:left; width:170px">Wybierz przedstawiciela:</div>

<div style="float:left; width:400px">

<telerik:RadComboBox ID="_rcbBokers" runat="server" OnClientLoad="OnBrokersLoad"

LoadingMessage="Wczytuję..." NoWrap="true" Skin="Default" AllowCustomText="false"

OnClientSelectedIndexChanged="OnBrokerChanged" OnClientItemsRequesting="OnBrokersRequesting"

OnClientItemsRequested="OnBrokersRequested">

<WebServiceSettings Method="GetBrokers" Path="WebServices/WarehousesService.asmx" />

</telerik:RadComboBox>

</div>

</div>

<div class="border"></div>

<div style="clear:both; overflow:hidden; margin:2px">

<div style="float:left; width:170px">Wybierz magazyn:</div>

<div style="float:left; width:400px">

<telerik:RadComboBox ID="_rcbWarehouses" runat="server" OnClientItemsRequesting="OnWarehousesRequesting"

LoadingMessage="Wczytuję..." NoWrap="true" Skin="Default" AllowCustomText="false" OnClientItemsRequested="OnWarehousesRequested">

<WebServiceSettings Method="GetWarehouses" Path="~/WebServices/WarehousesService.asmx" />

</telerik:RadComboBox>

</div>

</div>

here is my code behind:

public partial class WarehousePicker : UserControl

{

protected void Page_Load(object sender, EventArgs e)

{

if (IsPostBack) return;

if (Session["warehouseId"] != null)

{

ViewState["warehouseId"] = Session["warehouseId"];

ViewState["brokerId"] = Session["brokerId"];

}

else

{

ViewState["warehouseId"] = -1;

ViewState["brokerId"] = -1;

}

if (!Page.ClientScript.IsClientScriptBlockRegistered(typeof(WarehousePicker), "warehousPickerScript"))

Page.ClientScript.RegisterClientScriptBlock(typeof(WarehousePicker), "warehousePickerScript",

string.Format(

Properties.Settings.Default.WarehousePickerScript,

ViewState["brokerId"], _rcbWarehouses.ClientID,

_rcbBokers.ClientID, ViewState["warehouseId"]));

Session["warehouseId"] = null;

Session["brokerId"] = null;

}

}

here is javascript I have in Settings.Default.WarehousePickerScript

<script type="text/javascript">

//<![CDATA[

function OnBrokersLoad(combo, eventArgs) {{

combo.requestItems("", false);

}}

function OnBrokersRequesting(combo, eventArgs) {{

var brokerId = '{0}';

var context = eventArgs.get_context();

context["BrokerID"] = brokerId;

}}

function OnBrokersRequested(combo, eventArgs) {{

var item = combo.findItemByValue('{0}');

if (!item && combo.get_items().get_count() > 0) {{

item = combo.get_items().getItem(0);

}}

if (item) {{

combo.set_text(item.get_text());

item.select();

}}

var warehouseCombo = $find('{1}');

warehouseCombo.requestItems(combo.get_value(), false);

}}

function OnBrokerChanged(combo, eventArgs) {{

var warehousesCombo = $find('{1}');

var item = eventArgs.get_item();

warehousesCombo.requestItems(item.get_value(), false);

}}

function OnWarehousesRequesting(combo, eventArgs) {{

var brokersCombo = $find('{2}');

var warehouseId = '{3}';

var context = eventArgs.get_context();

context["BrokerID"] = brokersCombo.get_value();

}}

function OnWarehousesRequested(combo, eventArgs) {{

var item = combo.findItemByValue('{3}');

if (!item && combo.get_items().get_count() > 0) {{

item = combo.get_items().getItem(0);

}}

if (item) {{

combo.set_text(item.get_text());

item.select();

}}

}}

//]]>

</script>

and here is my WebService code:

[WebService(Namespace = "http://tempuri.org/")]

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

[GenerateScriptType(typeof(BrokerItem))]

[GenerateScriptType(typeof(WarehouseItem))]

[GenerateScriptType(typeof(SelectionMode))]

[ToolboxItem(false)]

[ScriptService]

public class WarehousesService : WebService

{

[WebMethod(EnableSession = true)]

public RadComboBoxData GetBrokers(RadComboBoxContext context)

{

var userId = ((User)HttpContext.Current.Session["user"]).ID;

var brokerText = context["BrokerID"].ToString();

int brokerId;

var data = new RadComboBoxData();

int.TryParse(brokerText, out brokerId);

data.Items = (from broker in Entities.Instance.GetBrokers(userId, ActiveType.Active, ActiveType.Active, Premission.Preview | Premission.Central)

select new RadComboBoxItemData { Text = broker.Name, Value = broker.ID.ToString() }).ToArray();

data.EndOfItems = true;

data.NumberOfItems = data.Items.Length;

var item = (from itemData in data.Items where itemData.Value == brokerText select itemData).FirstOrDefault();

if (item != null)

{

data.Text = item.Text;

data.Value = item.Value;

}

else if (string.IsNullOrEmpty(context.Text) && data.Items.Length > 0)

{

data.Text = data.Items[0].Text;

data.Value = data.Items[0].Value;

}

return data;

}

[WebMethod(EnableSession = true)]

public RadComboBoxData GetWarehouses(RadComboBoxContext context)

{

var brokerText = context["BrokerID"].ToString();

var userId = ((User)HttpContext.Current.Session["user"]).ID;

int brokerId;

int.TryParse(brokerText, out brokerId);

var data = new RadComboBoxData

{

EndOfItems = true,

Items = (from warehouse in Entities.Instance.GetUserWarehouses(brokerId, userId, ActiveType.Active, Premission.Edit)

where warehouse.ID != 1

select

new RadComboBoxItemData { Text = warehouse.Name, Value = warehouse.ID.ToString() }).

ToArray()

};

data.NumberOfItems = data.Items.Length;

return data;

}

}

I'm using visual studio 2008, .net framework 3.5 and Telerik Controls for ASP.NET AJAX v. 2009.02.826.35, and this code was working fine with v. 2009.02.701.35

Thanks in advance

regards

Paweł Aszklar

[Paweł Aszklar]

Hi again,

I forgot to  check out internal builds. Getting v. 2009.2.906.20 helped.

I'm sorry for any trouble, but I home my posts may help someone else.

regards

Paweł Aszklar